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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 349 · 40 questions
TalentJR

The fast method (Jump the point): Count the zeros: 10 → 1 jump, 100 → 2 jumps, 1000 → 3 jumps. × moves the point right; ÷ moves it left. Run out of digits? Fill the gaps with 0s. Drop 0s at the end of a decimal: 3.40 is 3.4.

NameDateTime takenScore ___ / 40
  1. 1.412.5 ÷ 10 =
  2. 2.493.5 ÷ 100 =
  3. 3.30.46 × 10 =
  4. 4.18.78 × 10 =
  5. 5.12.76 × 100 =
  6. 6.489.2 ÷ 1000 =
  7. 7.298.8 ÷ 1000 =
  8. 8.43.31 ÷ 1000 =
  9. 9.106.2 ÷ 10 =
  10. 10.16.13 ÷ 10 =
  11. 11.28.26 × 100 =
  12. 12.72.1 ÷ 10 =
  13. 13.132.2 × 1000 =
  14. 14.418.1 × 1000 =
  15. 15.36.61 ÷ 1000 =
  16. 16.135.7 ÷ 100 =
  17. 17.337.8 ÷ 100 =
  18. 18.336.9 ÷ 1000 =
  19. 19.357.6 ÷ 10 =
  20. 20.201.2 × 10 =
  21. 21.20.66 × 10 =
  22. 22.116.7 × 100 =
  23. 23.73.2 ÷ 100 =
  24. 24.223.1 ÷ 100 =
  25. 25.40.13 × 1000 =
  26. 26.25.47 × 1000 =
  27. 27.221.5 ÷ 1000 =
  28. 28.11.11 ÷ 10 =
  29. 29.15.5 ÷ 10 =
  30. 30.331.4 ÷ 1000 =
  31. 31.285.2 × 100 =
  32. 32.101.7 ÷ 100 =
  33. 33.2.2 ÷ 100 =
  34. 34.408.9 ÷ 10 =
  35. 35.25.64 ÷ 10 =
  36. 36.301.3 ÷ 100 =
  37. 37.29.8 ÷ 1000 =
  38. 38.423.9 × 1000 =
  39. 39.187.9 × 1000 =
  40. 40.36.32 ÷ 1000 =

Answer key

  1. 41.25
  2. 4.935
  3. 304.6
  4. 187.8
  5. 1276
  6. 0.4892
  7. 0.2988
  8. 0.04331
  9. 10.62
  10. 1.613
  11. 2826
  12. 7.21
  13. 132200
  14. 418100
  15. 0.03661
  16. 1.357
  17. 3.378
  18. 0.3369
  19. 35.76
  20. 2012
  21. 206.6
  22. 11670
  23. 0.732
  24. 2.231
  25. 40130
  26. 25470
  27. 0.2215
  28. 1.111
  29. 1.55
  30. 0.3314
  31. 28520
  32. 1.017
  33. 0.022
  34. 40.89
  35. 2.564
  36. 3.013
  37. 0.0298
  38. 423900
  39. 187900
  40. 0.03632

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